Product ID: S3540BU33E
The S3540BU33E 4-Bay HDD enclosure lets you install four 3.5” SATA hard drives into an external enclosure, and connect to your computer through USB 3.0 or eSATA.
For fast performance and efficient data transfers, the enclosure supports SATA III transfer speeds -- up to 6 Gbps when connected through eSATA. The versatile enclosure can also be connected through USB 3.0, with support for UASP, performing up to 70% faster than conventional USB 3.0 when paired with a UASP-enabled host controller. See our UASP testing results below for further details.
The S3540BU33E is backed by a StarTech.com 2-year warranty and free lifetime technical support.
UASP is supported in Windows 10/8, Mac OSX (10.8 or above), and Linux. In testing, UASP performs with a 70% faster read speed and 40% faster write speed over traditional USB 3.0 at peak performance.
At the same peak in testing UASP also shows an 80% reduction in required processor resources.
Testing results were obtained using an Intel® Ivy Bridge system, a UASP-enabled StarTech.com Enclosure, and a SATA III solid state drive.
|Warranty Information||Warranty||2 Years|
|Connector(s)||4 - Drive Connectors||SATA Data & Power Combo (7+15 pin)|
|1 - Host Connectors||eSATA (7 pin, Data)|
|Environmental||Operating Temperature||5°C to 35°C (41°F to 95°F)|
|Storage Temperature||-20°C to 50°C (-4°F to 122°F)|
|Humidity||20%RH ~ 80%RH|
|Hardware||Bus Type||USB 3.0|
|Interface||USB 3.0 & eSATA|
|Number of Drives||4|
|Compatible Drive Types||SATA|
|Number of internal 3.5 inch bays||4|
|1 - Fans||80 mm|
|Chipset ID||JMicron - JMS567
JMicron - JMB575
|Indicators||1 - LED Indicators||Power LED|
|4 - LED Indicators||HDD Activity LEDs|
|Packaging Information||Package Height||19.7 cm [7.8 in]|
|Package Length||28.2 cm [11.1 in]|
|Package Width||22.2 cm [8.7 in]|
|Shipping (Package) Weight||2.2 kg [4.9 lb]|
|Performance||Maximum Data Transfer Rate||6 Gbps (eSATA)
5 Gbps (USB 3.0)
|Type and Rate||USB 3.0 - 5 Gbit/s|
|Type and Rate||SATA III (6 Gbps)|
|Hardware Raid Supported||No|
|Max Drive Capacity||Currently tested with up to 6TB 7200 RPM hard drives|
|Hot Swap Capability||No|
|General Specifications||Supports 2.5in Solid State Drives (SSD) and Hard Drives (HDD) using a 2.5in to 3.5in drive adapter such as 25SAT35HDD and 25SATSAS35|
|Physical Characteristics||Product Length||20.0 cm [7.9 in]|
|Product Width||11.4 cm [4.5 in]|
|Product Height||14.3 cm [5.6 in]|
|Weight of Product||1.0 kg [2.3 lb]|
|Power||Power Source||AC Adapter Included|
|Input Voltage||100 - 240 AC|
|Input Current||2.5 A|
|Output Voltage||12V DC|
|Output Current||6.5 A|
|Power Consumption (In Watts)||78|
|Software||OS Compatibility||OS independent; No software or drivers required|
|What's in the Box||1 - Included in Package||USB 3.0/eSATA 4-Bay 3.5" SATA hard drive enclosure|
|USB 3.0 cable|
|universal power adapter (NA,UK,EU)|
Add 2 USB 3.0 ports to your desktop computer through a PCI Express expansion slot
Add an eSATA port to a desktop computer through a PCI Express slot
Add 4 USB 3.0 ports to your desktop computer through a PCI Express expansion slot
Add 2 USB 3.0 ports through a mini PCI Express slot
Add 2 USB 3.0 ports to a desktop computer through a PCI slot
Add two flushmount USB 3.0 ports to your ExpressCard-enabled laptop
Flush mount a USB 3.0 ExpressCard adapter into a laptop ExpressCard slot
Add one internal and one external SuperSpeed USB 3.0 to your PC
Add 2 eSATA ports to your desktop computer through a PCI Express expansion slot
Add an internal SATA port and an external SATA (eSATA) port to your desktop computer through a PCI Express expansion slot
Add 2 eSATA ports through your laptop ExpressCard slot
Connect your external SATA storage devices to your Laptop or desktop.
Connect your external SATA storage devices to your Laptop or desktop.
Replace your lost or failed power adapter
SATA hard drive controllers require a feature called port multiplier to read more than one hard drive per SATA or eSATA port. The port multiplier feature is not standard on many SATA hard drive controllers.
If your computer is only recognizing one of your hard drives, you need to plug the eSATA cable into a SATA controller that includes the port multiplier feature. If none of your current hard drive controllers include this feature, you can add a hard drive controller that does support port multiplier in any available expansion slot (for example, PCI, PCI-Express, PCMCIA, CardBus, or ExpressCard). StarTech.com has hard drive controllers available that support the port multiplier feature. To view the hard drive controllers, click here: http://startech.com/Cards-Adapters/HDD-Controllers/SATA-Cards/?filter_PORTMULTIPLIER=Yes.
If you have a hard drive controller card that does support the port multiplier feature but it is only reading one hard drive at a time, update the drivers of the hard drive controller. To find the most current StarTech.com drivers, click here: http://www.startech.com/Support.
When you troubleshoot issues with a hard drive enclosure, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
To test your setup components, try the following:
When you test the hard drive and hard drive enclosure, it is recommended that you do the following:
Note: Formatting a hard drive erases all of the data on it. Make sure that you back up all of your data before you reformat the hard drive.
Note: A formatted hard drive will not show up in Computer or My Computer until it has a drive letter assigned to it.
To confirm that the Mac OS detects your USB device, complete the following:
You may need to refresh the System Information page after you plug in your device. To do so, press Command + R with the System Information page open.
Your USB device is listed according to the name of the chipset. To determine the name of the chipset of your USB device, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.
To determine if your hard drive will work in this enclosure, on the product page, click the Technical Specifications tab, and do the following:
Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, ex-FAT, NTFS, and so on).
Note: You typically only need to initialize a drive if the drive is new. If you cannot find an uninitialized drive in Disk Management, skip the following steps and try to partition your device.
Press the Windows key + R, type compmgmt.msc, and click Run to open Computer Management.
Navigate to Disk Management.
When prompted to, initialize your disk(s). If you are running Windows® 7 or later and are using a drive larger than 2TB, initialize the disk(s) with GPT. If you are running an earlier version of Windows, initialize the disk(s) with MBR. For more information, visit the following FAQ: https://www.startech.com/support/faqs/technical-support?topic=hard-drives#mbr-vs-gpt.
Note: The following steps create an NTFS partition that uses the entire drive space. To use a different file system, select a different option in step 6.
Right-click Unallocated or RAW volume, and select New Simple Volume.
In the New Partition Wizard, click Next.
Select Primary partition.
Leave the partition size set to default, and click Next.
Assign a drive letter or leave it set to the default, and click Next.
Enter the following settings to format the partition:
The new drive should appear in Windows Explorer.
Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, HFS+, ex-FAT, NTFS, and so on).
Mac OSX detects a drive that needs to be initialized and automatically prompts you to initialize the drive. If you are prompted to initialize the drive, click Initialize. If you are not prompted to initialize the drive and you cannot find the drive in Finder, you will need to create a partition on the drive.
Note: The following steps create an HFS+ (Mac OS Extended (Journaled)) partition that uses the entire drive space.
To create a partition on a new drive, complete the following:
Navigate to Applications and click Utilities.
Open Disk Utility.
Select the new drive and click the Partition tab.
Click Options and verify that it is set to GUID Partition Table.
Enter a name for the partition.
The drive should now be accessible in Finder.
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